Exercise

Post-hoc test one

You will now look at a few different procedures for the post-hoc test. Let's start with the Holm procedure.

Instructions

100xp

Have a look at the code on the right. It uses the function with() to do all pairwise comparisons in one step. The first argument contains the data frame and the second argument contains the expression to be evaluated. Pairwise comparisons can then be performed with pairwise.t.test() in the second argument of with(). Click 'Submit Answer' and study the output closely.